Task 3 Complete the sentences with: involuntary, endorphins, hormones, cells andepinephrine.11 When we exercise our bodies release a chemical that helps concentration.that we12 Our memory and creativity depend on the number of brainhave.13 Thein our body are feel good chemicals that make us feel relaxedand happy.14 The growth and strength of our muscles can be affected by our15 Some muscles in our bodies are calledfunction automaticallymuscles because they​

Julia Sherman spent (spend) her summer holidays with her parents at the seaside.They ...TOOK  (take) a trip to Africa. Julia and her parents wanted to visit Egypt and the Red Sea. Julia's dad ... BOUGHT (buy) the tickets. They ... ARRIVED(arrive) at the airport on time. Julia ...SAW (see) a lot of big and modern planes. On board Julia ...ATE (eat) tasty sandwiches and ...DRANK (drink) some juice. Julia ... READ (read) a book and ...WATCHED (watch) an interesting video.
In the afternoon Julia and her parents arrived at the hotel. From the window she ... COULD (can) see the Red Sea and ..SMELLT. (smell) the beautiful flowers. She ... WANTED (want) to go sightseeing. She ..TOOK. (take) a lot of photos of the Sahara Desert, the big camels, and the exotic flowers. For two weeks she ...HAD  (have) a lot of sunbathing, ...SWAM (swim) and ..WATCHED. (watch) the beautiful fish in the sea all day long. She ...WAS (be) very happy at the seaside.